Keystones — Lintel
Five GCSE retrieval questions · 5 June 2016 · mathsvault.uk/keystones
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1. Number Converting to standard form
Write 9,500,000 in standard form
Answer: 9.5 × 106 -
2. Algebra Factorising monic quadratics
Factorise: x² - x - 90
Answer: (x + 9)(x - 10) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 32cm, angle = 46°. Find adjacent side. Give your answer to 2 decimal places
Answer: 22.23cm -
4. Ratio Mixed ratio problems
£132.00 is shared between A and B in the ratio 1:2. How much does A receive?
Answer: £44.00 -
5. Statistics Mean
Calculate the mean of: 12, 24, 19, 30, 16, 33, 24. Give your answer to 2 decimal places
Answer: 22.57